add option to enable http server or not

cmd/http3-ytproxy/main.go

@@ -176,11 +176,15 @@ func main() {
 	defaultTLSCert := "/data/cert.pem"
 	defaultTLSKey := "/data/key.key"
 
+	var http_server bool = true
 	var https bool = false
 	var h3c bool = false
 	var ipv6 bool = false
 	var bc bool = true
 
+	if strings.ToLower(getenv("HTTP")) == "true" {
+		http_server = true
+	}
 	if strings.ToLower(getenv("HTTPS")) == "true" {
 		https = true
 	}
@@ -339,6 +343,7 @@ func main() {
 		go srv.Serve(socket_listener)
 		log.Println("Unix socket listening at:", string(sock))
 
+		if http_server {
 			if https {
 				if _, err := os.Open(tls_cert); errors.Is(err, os.ErrNotExist) {
 					log.Panicf("Certificate file does not exist at path '%s'", tls_cert)
@@ -349,11 +354,13 @@ func main() {
 				}
 
 				log.Println("Serving HTTPS at port", string(port)+"/tcp")
+
 				go func() {
 					if err := srv.ServeTLS(ln, tls_cert, tls_key); err != nil {
 						log.Fatal("Failed to server HTTP/2", err.Error())
 					}
 				}()
+
 				if h3s {
 					log.Println("Serving HTTP/3 (HTTPS) via QUIC at port", string(port)+"/udp")
 					go func() {
@@ -371,3 +378,4 @@ func main() {
 			}
 		}
 	}
+}